C16 WCDMA RNP Indoor Distribution System Design ISSUE1.0

Wireless Curriculum Development SectionWireless Curriculum Development Section

ISSUEISSUE

OWJ101106 WCDMA RNP Indoor OWJ101106 WCDMA RNP Indoor Distribution System DesignDistribution System Design

1.01.0

Confidential Information of Huawei. No Spreading without Permission.

Security Level: Internal

2

Objectives

To introduce an general Idea on Design Process for Indoor Distribution System

To provide Some typical solutions for indoor distribution system

To know how to select equipment type



3

Outline

Introduction Indoor Coverage Scenarios Design Process for Indoor Distribution System Equipment Type Selection Some Typical Solutions List of Materials & Cost Estimation Appendix:

Micro NodeB RRU Some Examples of DAS Design



4

Why We need indoor Distribution System?

Coverage Problems Outdoor macro cell cannot satisfy indoor coverage

High penetration loss RSCP ( less than -95dBm )

Jumeira Beach Hotel Burj Al Arab Hotel.

Capacity Problems Most of the calls: indoor calls Heavy traffic: some special buildings Outdoor macro cells cannot meet the indoor capacit

y requirement DWTC: GITEX.



5


RSCP > -85dB: 10% RSCP > -95dB: 25% RSCP > -105dB: 70%

For example: Burj Al Arab Hotel, 27th flooroutdoor macro cell: SC154



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RSCP > -85dB: 5% RSCP > -95dB: 24% RSCP > -105dB: 64%

For example: Jumeira Beach Hotel, 8th flooroutdoor macro cell: SC152



7

Why we need to provide indoor coverage?

Better cooperation between 3G and 2G Without UMTS indoor coverage, 3G service cannot be used at

indoor environment (VP, high speed data service) When mobile reselect from 3G to 2G, location update happens.

This will make a lot of impact on system and network. E.g. increasing system signaling load. Also, before mobile finish the location update, this mobile cannot be the MT. Call failed will happen fluently.

The inter-system measurement and handover will always take more time than intra-system handover and reselection. If the signal fading fast, it will not have enough time to perform handover or reselection, and call drop or no service will happen.



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Why we need to provide indoor coverage? Indoor coverage can be divided into two part:

Normal: to use the outdoor macro cells to provide 1st wall indoor coverage of the network

Dedicated: to use the dedicated indoor solutions to provide the deep indoor coverage of the network.(e.g. important building, basement, elevator, etc.)

In the course, we will focus on dedicated indoor solution and DAS sharing analysis between 3G and 2G.

Micro NodeB

antenna

splitter



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Difference between UMTS and GSM

For GSM: Less frequency resource is

occupied; Less sensitive for the overlap

between cells;

For UMTS: Without dedicated carrier for

indoor, sometimes difficult to control the interference;

Difficult to control the overlap between cells and specific solutions has to be thought of.



10

Outline





11

Different Indoor Scenarios - Villa & Apartment

VillasPropagation CharacteristicsSmall area each floor

The building is very low

Wall penetration loss， Typical 10dB

Standalone

ApartmentPropagation CharacteristicsSquare each floor < 1000m2

Building height < 30m

Penetration loss in one floor, Typical 5-20dB



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Different Indoor Scenarios - Open hall Airport terminal

(1)Propagation CharacteristicsLarge area each floor > 2000m2Building floor less than 5In floor penetration loss is low

(2)Features of traffic distributionLarge data traffic throughput

Shopping Mall(1)Propagation CharacteristicsSquare each floor > 1000m2Building height < 30m

Penetration loss in one floor, Typical 5-20dB

(2)Features of traffic distributionMainly voice , including VP



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Different Indoor Scenarios - Multi floor building

Office building(1) Propagation CharacteristicsLarge area each floor > 1000m2

Building floor> 15, or height > 50m

In floor penetration loss, Typical 5-20dB

(2) Features of traffic distributionMainly voice , including VP

Hotel(1) Propagation CharacteristicsSquare each floor > 500m2

Building floor> 15, or height > 50m

Penetration loss in one floor, , Typical 5-20dB

(2) Features of traffic distributionLarge data traffic throughput



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Different Indoor Scenarios - Event triggered large area Conference centre, Exhibition hall, Football stadiums etc. (1) Propagation Characteristics

Large area each floor > 2000m2Building floor : very few, usually only oneIn floor penetration loss is low

(2) Features of traffic distributionTraffic density is event triggered

In usual time , the traffic density is very low

If important event happens , the traffic density may rise sharply to above 1000 erl/km2it is necessary to reserve enough capacity



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Different Indoor Scenarios - Basement car park

Basement car park

(1) Propagation Characteristics

Large area each floor

Completely closes area for each floor

In floor penetration loss, Typical 5-20dB

(2) Features of traffic distribution

Usually very low traffic density

Mainly voice

Generally, this kind of area is covered by repeater, however, micro NodeB or RRU can also be used.

Indoor distributed antenna system is not necessary.



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Examples: different solutions

RRU:RemoteRadioUnit

BTS 3812

Softer H/O area

f1f0

BTS 3812

Softer H/O area

f1f0

Digital signal transmitted by optical , NO receive sensibility and power LOSS

DAS:DistributedAntennaSystem

Micro BTSE1/STM-1 cascade

Indoor

Antenna

RRU

Indoor DAS is available

Indoor DAS not available;

covered by antennas directly

covered by RRU

Outdoor Macro NodeB

Nearby macro NodeB + RRU

Micro NodeB

Macro NodeB+RRU



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Outline





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Design Process for Indoor Distribution System

Design Preparation Coverage and Capacity Dimensioning Interference & Performance analysis Indoor Distribution System Solution Indoor Verification Test



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Design Preparation: Step 1

Step 1: Coverage Target Analysis Coverage Range

Rough Coverage Range

Coverage Requirement of the network Area coverage probability requirement

Capacity Requirement of the network How many subscribers

Cell load

Investment Scale of the Project



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Step 2: Survey on the outdoor cell Coverage Outdoor cells may interference the indoor distribution system

Pilot pollution may occur More serious interference in higher stories necessary to carry out indoor signal test

signal strength and distributions in the building

Stories Selection for Test: Suggestion 1~2 stories for the lower part of the building

1~2 stories for the middle part of the building 1~2 stories for the upper part of the building

Drive Test Tools e.g. Agilent 6474A device



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Step 3: Preparation of Building Drawings Obtain Building Drawings

Coverage Target Storey

Plan Drawing Elevation Drawing Strong and Weak Electric Wells

Existing Transmission in the building



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Step 4: Indoor Survey of the Building Collect enough information for indoor distribution system

Determine the exact coverage range Identify Coverage Requirement for different storey Take enough digital Photographs

Indoor details and Building Profile

Identify building materials, thickness of floor / ceiling / wall Estimate the penetration loss

check Obtainable transmission, power supply, cable resource, and requirements from building management

Check if GSM/CDMA indoor distribution system already exists WCDMA will probably share the same indoor distribution system



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Step 5: Indoor CW Test Obtain indoor propagation characteristics Correct indoor propagation model (if possible) Estimate the penetration loss

Inner partition walls

Floors and ceilings



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Coverage & Capacity Dimensioning (1)

Indoor Propagation Model: Keenan-Motley model

PL(d0) is free space loss at the d0 distance;

d is the distance between transmitter and receiver; d0 is the reference distance; (normally d0 is 1m); n is the average path loss attenuation exponents; Kfi stands for the number of the floors of type i; Kwj stands for the number of the walls of type j; Lfi stands for the penetration loss of the floor of type i; Lwj stands for the penetration loss of wall of type i; a : linear penetration loss factor. typical value 0.2dB/m d1: breakpoint. Typical value is 65m.

0 032.45[dB] 20 lg [km] [MHz]PL d d f



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Indoor Propagation Path Loss f=2000MHz, d=1m

Path loss = 38 dB f=2000MHz, d=30m

Path loss = 80 dB f=2000MHz, d=60m

Path loss =88 dB f=2000MHz, d=80m

Path loss = 92 dB

Note: assume path loss attenuation exponent is 2.8



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Uplink CS12.2 CS64 PS64 PS128 PS144 PS384

Max Power of UE 21 21 21.00 21.00 21.00 21.00

Atenna Gain of UE 0 0 0.00 0.00 0.00 0.00

NF of NodeB Rx 2.2 2.2 2.20 2.20 2.20 2.20

bit rate of service 12.2 64 64 128 144 384

EbvsNo in UL 5.4 2.7 2.4 1.9 1.9 1.6

Sensitivity in UL -125.54 -121.04 -121.34 -118.83 -118.32 -114.36

UL loading 50% 50% 50% 50% 50% 50%

noise rise 3.01 3.01 3.01 3.01 3.01 3.01

SHO Gain 1.50 1.50 1.50 1.50 1.50 1.50

fast fading margin 2.31 3.14 3.14 3.38 3.38 3.65

max CL in UL 142.72 137.39 137.69 134.94 134.43 130.20

PL_CL - PL_DL 1.37 1.37 1.37 1.37 1.37 1.37

max CL in DL 144.09 138.76 139.06 136.31 135.80 131.57

GSM1800 BCCH TxPwr 43 43 43 43 43 43

Combiner/Diplexer Loss 1 1 1 1 1 1

Frequency Correction Loss (feeder) 2 2 2 2 2 2

Outdoor Interference Margin 10 10 10 10 10 10

Min. Required RxLev Threshold -88.09 -82.76 -83.06 -80.31 -79.80 -75.57

3G Shares GSM DAS: GSM1800 BCCH



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Capacity Dimensioning Choose appropriate signal resource

Macro NodeBMicro NodeBRRU

Different power and base band resource The basic capacity formula

refer to dimensioning training material Indoor cells can support more users than ou

tdoor macro Interference from other cell: smaller Non-orthogonal factor: smaller



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Importance of CW test Make sure that indoor propagation model is only a reference for

indoor coverage design. To perform a CW test in the building is always recommended.

antenna

CWtransmitter

CW DTResults



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Near far effect is a very important issue that we have to consider carefully, especially when we use some high gain antenna to provide a big coverage at indoor environment.

The problem of this is that the users at cell edge may be blocked by the users close to the antenna.

The typical scenario of this will happen at: The coupling loss difference between two users is more than 50 dB.

Near far effect



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The coverage analysis results will decide the DAS (Distributed Antenna System) structure.

The capacity analysis will decide which signal resource will be used, macro-NodeB, micro-NodeB, RRU, repeater, etc.

Different equipment will have different power and base band resource. Which to use depend on the capacity analysis.

The basic capacity formula is as usual. For more details, please refer to dimensioning training material

In indoor environment, the non-orthogonal factor and other cell interference will reduce a lot comparing with outdoor macro. Normally indoor cells will absorb more users than outdoor macro.

Summary: coverage and capacity



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Analysis: Intra-frequency Interference There is interference between outdoor and indoor intra-

frequency cells. There is interference between indoor intra-frequency cells.

Solutions:

Interference Analysis: intra-system

For floors under the coverage of different cells, install

the DAS antennas in one vertical plane to avoid intra-

frequency interference between the floors.

On the contrary, for floors under the coverage of one cell,

install the DAS antennas at different positions to make the

signal strength even on the floors.



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Solutions: Enhancing indoor signal strength

near window areas The indoor signal strength

should be 6dB higher or more than the outdoor best cell signal.

However, indoor signal leakage shall be minimized.

e.g. In the soft handover area on 1F, the indoor signal is 6dB lower than the outdoor best cell signal beyond certain range such as beyond 5 m from the external wall. In none handover area the indoor signal is 6dB lower than the outdoor best cell signal beyond certain range such as beyond 3 m from the external wall.

Interference Analysis: intra-system



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The inter-system interference can be classified into:

Spurious emission of a system falling in the receive band of other systems

Inter-modulation products of TX signals falling in the receive band of other systems

TX signals and spurious emission of a system blocking other receivers

Spurious interference is a focus for DAS shared by WCDMA, GSM900 and WLAN.

Interference Analysis: inter-system



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Solutions: Multi-band Diplexer is applied in DAS shared by WCDMA,

DCS1800 and GSM900 to suppress the inter-system interference. If the isolation of the diplexer is not enough, add a filter to the corresponding interfering base station. Normally, the acceptable spurious received by receiver i

s recommend to be 10 dB below noise floor. It means 0.4dB noise rise.

Generally speaking, the rejection in other system RX band can be 50dB for the diplexer. The accurate rejection depends on the spurious of the base station.

MSs’ interference in base stations and interference between MSs can be omitted if the antenna positions are designed properly.

Interference Analysis: inter-system



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Scenario Entrance of building Lower floors

Suggestion 1: Intra-frequency coverage

Subscribers perform soft handover when passing through the entrance of the building. The handover success ratio is high.

Outdoor cell and indoor cell should be configured as neighboring cells.

Recommended when traffic is light in initial phase to ensure the service quality .

Solution to problems of handover between cells

Outdoor cell and indoor cell are neighboring cells.

Performance Analysis- Handover



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Scenario Entrance of building Lower floors

Suggestion2 Inter-frequency coverage

There is no interference between outdoor and indoor cells

Subscribers perform hard handover when passing through the entrance . The handover success ratio is relatively low.

Outdoor cell and indoor cell should be configured as neighboring cells.

Recommended when traffic becomes heavy.

Outdoor cell and indoor cell should be configured as neighboring cells





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Scenario lift

Suggestion1 A single cell covering lift well The lift and 1F are under the

coverage of the same cell. Out-lift/in-lift handover is not

required on 1F.

Recommended in most of deployment


CELL2 range

CELL2 range

CELL2 range

CELL1 range

CELL1 range

CELL1 range

Cell

1range

lift

CELL1 signal CELL2 signal



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Scenario Lift

Suggestion2 Combining signals of

multiple cells The lift well is a soft

handover area. Success ratio of out-lift/in-

lift on all floors is high. Higher cost

Recommended in lower building where high quality of QOS is demanded

Not recommended when there are relatively many cells in the building





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Scenario Area near window in higher

floor

Suggestion 1 Intra-frequency coverage

near window Configure the cell on higher

floors and the outdoor cell as neighboring cells to avoid call drop near windows.

Enhance the signal level near windows on higher floors to decrease soft handover events.

Recommended when traffic is light in initial phase to ensure the service quality .





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Scenario Area near window on higher

floors

Suggestion 2 Inter-

frequency coverage near window No special consideration is

required for the little interference between outdoor and indoor cells.

Do not configure the indoor cell on higher floors and the outdoor cell as neighboring cells when the higher and lower floors are under the coverage of difference cells.

Recommended when traffic becomes heavy.





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Indoor Distribution System Solution (1)

Antenna layout diagram for each floor Determine Antenna Quantity Determine Antenna Installation Location



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Estimate Transmit Power from each Antenna Example

Passive Distribution System

BTS Output Power: 5W

7/8” Cables

1/2 Power Splitter

Ceil-mounted Omni Antenna

Each Floor: two Antennas



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Estimate transmit power from each antenna



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Detailed Network Topology Diagram



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Detailed Cabling Diagram Vertical View and Plan Layout Indicate Feeder Cable Length Splitters Location Couplers Location



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Design Preparation Coverage and Capacity Dimensioning Indoor Distribution System Solution Interference & Performance analysis Indoor Verification Test



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Indoor Verification Test

To Guarantee the indoor signal quality Install antennas in the right positions Make sure each antenna transmits continuous

waves as the expected power level Choose enough test points and make signal power

level test Make indoor drive test if possible Analyze the test data and check if the design meets

the coverage requirements If not, take measures to improve the design



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Outline





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Equipment Type Selection

Equipments Type Signal Source Equipment Type Feeder Cable Type Indoor Antenna Type Splitter Type Coupler Type



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Equipment Type Selection: Signal Source

Signal Source Equipment Type macro NodeB micro NodeB RRU



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Equipment Type Selection: Feeder Cable

Feeder Cable Type Feeder Cable Loss

7/8” cable feeder: 6.1dB/100m

1/2” cable feeder: 10.7dB/100m

Construction Feasibility Minimum curvature radius requirement

25.4cm for 7/8” cable feeder

12.7cm for 1/2” cable feeder

Burning Point Requirement



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Equipment Type Selection: Indoor Antenna (1)

Some restrictions for indoor antenna Short distance coverage Transmit power restriction Installation space restriction Vision pollution restriction



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Equipment Type Selection: Indoor antenna (2)

Indoor Antenna Types Omni antenna

Ceiling-mounted omni antenna

Bar-type omni antenna

Directional Antenna



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Equipment Type Selection: Omni Antenna (1)

Basic Requirement for Omni Antenna Spectrum Range: 800M~2500MHz Gain: 2dBi Horizontal beam width: 360 Vertical beam width: 90 Polarization: vertical polarization VSWR: less than 1.5 Down tilt: no



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Equipment Type Selection: Omni Antenna (2)

Some Existing Omni Antenna Types KATHREIN

Type: 80010137

Frequency Range: 876-960/1710-2500MHz

Polarization: vertical polarization

Gain: 2 dBi

DECIBEL Type: DB784SM5N-SY Db Diamond

Frequency Range: 806-2200MHz

Polarization: vertical polarization

Gain: 2.1 dBi



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Equipment Type Selection: Directional Antenna (1)

Basic Requirements for Directional Antenna Spectrum Range: 800M~2200MHz Gain: 7 dBi Horizontal beam width: 90 Vertical beam width: 60 Polarization: vertical polarization Front-to-back ratio: > 20 dB VSWR: < 1.5



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Some Existing Directional Antenna Types KATHREIN



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Some Existing Directional Antenna Types ANDREW



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High Gain Directional Antenna Types KATHREIN



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Equipment Type Selection: Splitter (1)

Splitter Type Performance parameters

Bandwidth Requirements

Isolation Requirements

1/2 splitter 1/3 splitter 1/4 splitter



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Equipment Type Selection: Splitter (2)

KATHREIN Splitter

TYPE

Output Ports

Attenuation

Insertion loss

Inter-modulation

Freq. Range

VSWR

K737303

2

3 dB

<0.05dB

<-150dBC

800-2200MHz

<1.5

K737305

3

4.8 dB

<0.05dB

<-150dBC

800-2200MHz

<1.5

K737307

4

6 dB

<0.05dB

<-150dBC

800-2200MHz

<1.5



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Equipment Type Selection: Coupler (1)

Coupler Type Performance parameters

Bandwidth Requirements

Isolation Requirements

7 dB coupler 10 dB coupler 15 dB coupler



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Equipment Type Selection: Coupler (2)

KATHREIN Coupler

TYPE

Attenuation

Insertion loss

inter-modulation

Freq. Range

VSWR

K63236061

7 / 1.0dB

<0.05dB

<-150dBC

800-2200MHz

<1.5

K63236101

10.4 / 0.4 dB

<0.05dB

<-150dBC

800-2200MHz

<1.5

K63236151

15.1 / 0.1dB

<0.05dB

<-150dBC

800-2200MHz

<1.5



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Equipment Type SelectionComparison between splitter & coupler

Splitter Equal Power Distribution

Coupler Non-equal Power Distribution

Splitter Better for antennas in the same floor

Coupler Better for antennas in different floors



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Outline





69

Some Typical Solutions (1)

DAS:DistributedAntennaSystem

Micro BTSE1/STM-1 cascade

Indoor

Antenna

Signal source: micro NodeB



70


RRU:RemoteRadioUnit

BTS 3812

Softer H/O area

f1f0

BTS 3812

Softer H/O area

f1f0

Digital signal transmitted by optical , NO receive sensibility and power LOSS

Signal source: nearby macro NodeB + RRU



71


RRU

Indoor DAS is available

Indoor DAS not available;

covered by antennas directly

covered by RRU

Signal source: macro NodeB + RRU



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Outline





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List of Materials & Cost Estimation



74

Outline





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Micro NodeB (1)

Scenarios for micro NodeB Indoor Coverage Medium/Low Traffic Areas Blind Spots



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Micro NodeB (2)

Parameters for micro NodeB Support maximum 2 cells Transmission: E1 or STM-1 Power supply: AC Capacity: 64 CE Transmit power: 2*10W / 2*20W Weight: < 55kg Dimension: 460*350*700 (cm)



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RRU (1)

maximum 4 cells can be cascaded Maximum 100 km for 3 or 4 cascades Maximum 12 cells Maximum 2 cells per RRU

2TRX 2TRX

1TRX 1TRX 1TRX 1TRX

1TRX 2TRX 1TRX



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RRU (2)

Parameters for RRU Support maximum 2 cells Transmission: Optical Fiber Power supply: AC Capacity: 256 CE Transmit power: 2*10W / 2*20W Weight: < 50kg Dimension: 460*350*700 (cm) Cascade: max 4 cells, max distance 100km



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Comparison: RRU and micro NodeB

Handover RRU: Softer HO between RRU and host NodeB micro NodeB: Soft HO between micro NodeBs

Capacity One RRU: maximum 256 CE One micro NodeB: maximum 64 CE

Transmission RRU: Optical Fibers Micro NodeB: E1 or STM-1

O&M RRU: from host macro NodeB



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To verify the performance of WCDMA DAS, Huawei deploys a trial network on 9F through 14F in Jinmao Tower and plans soft and softer handover areas.

Jimao Tower is a skyscraper of 88 floors.

Omni antennas, directional antennas and leakage cables are adopted to satisfy the special DAS requirements in Jinmao Tower. (Leakage cables are usually used in special closed scenarios).

Application of WCDMA indoor coverage solution

Trial DAS in Jinmao Tower (Dec.2002)



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14F

13F

12F

11F

10F

9F

NODB1

NODB2

NODB3

二功分器

二功分器

(1/ 2" 60m)8. 4dB

4dB

4dB

(1/ 2" 7m)1dB

(1/ 2" 35m) 5dB

(1/ 2" 25m) 3. 5dB

(1/ 2" 40m) 5. 6dB

走线井

走线井

走线井

走线井

走线井

走线井

(1/ 2" 7m)1dB

(1/ 2" 50m) 7dB(1/ 2" 50m) 7dB

(1/ 2" 60m) 8. 4dB

(1/ 2" 7m)1dB

(1/ 2" 60m) 8. 4dB

ant1( )办公区

ant1( )办公区

ant2(1407)

ant2(1307)

ant1( )办公区

ant2(1207)

六小区（有泄漏电缆）

二功分器

4dB

二功分器

4dBant1( )办公区

ant2(1107)

二功分器 ant1( )办公区

ant2(1007)

(1/ 2" 40m)5. 6dB

(1/ 2" 5m)0. 7dB

(1/ 2" 7m)1dB

(1/ 2" 50m)7dB

(1/ 2" 15m)2. 1dB

(1/ 2" 30m)4. 2dB

(1/ 2" 50m)7dB

RLKU158-50J : 13/8"Longi tudinal Loss: 5.7dB/100m

Coupl i ng Loss 95%: 68dB

(1/ 2" 5m)0. 7dB

(1/ 2" 30m)4. 2dB

(1/ 2" 50m)7dB

RLKU158-50J (55m)二功分器 RLKU158-50J (65m)

4dB

4dB

Functional diagram of indoor network in Shanghai Jinmao TowerTrial DAS in Jinmao Tower(Dec.2002)




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Cabling diagram on one floo

r of Shanghai Jinmao Tower

Trial DAS in Jinmao Tower(Dec.2002)




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Trial DAS in Jinmao Tower(Dec.2002)•Distribution of pilot signals

•Percentage of points with good pilot coverage is 98.14%.

•Scrambling code : 0 and 128




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Existing DAS: Signal source: GSM Micro

BTS DAS: passive Applies two antennas on each

of:- 3F and 4F of building A- 1F through 4F of building B

Applies one antenna at the lift entrance:

- On 1F and 2F of building A

- In building B Applies one antenna for each

lift

Application of WCDMA and GSM DAS

CMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)



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Add BTS3802COnly three wall-

mounted antennas need be changed to support 2GHz bands.





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BTS 1

BTS 2

Hybrid Combiner

NodeBGSM900/WCDMA

Diplexer

Splitter

Modification Way Using diplexer to combine GSM and WCDMA signals after the

hybrid combiner

Components replaced: antenna

Components added: splitter, diplexer

Positions and mount of antenna unchanged

BTS 1

BTS 2

Hybrid Combiner

The existing GSM DAS Modified DAS





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Specifications of diplexerFrequency band band1 800~1000MHz

band2 1700~2170MHz

Insertion loss Port1-port3 0.16dB

Port2-port3 0.26dB(1700~2000MHz)

0.4dB(2000~2170MHz)

Isolation Port1-port2 >43dB(900~1000MHz)

>50dB(2000~2170MHz)

Power handlingband1 <250W

band2 <150W

Impedance 50 ohm

Connector typeDIN（ 7-16）

VSWR <1.3

Size 126*274*107mm

Weight 3.3kg

Temperature-55~60℃

Specifications of splitter

Frequency band800~2200MHz

Insertion loss 0.05dB

VSWR <1.15

Connector type DIN(7-16)

Impedance 50 ohm

PIM <-150dBc

Size 294*82*82mm

Weight 1.5kg

Signal source: BTS3802C

Specifications of components replacedCMCC DAS of WCDMA/GSM in Dongguan Mobile mansion(Apr.2003)




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WCDMA signal distribution before redeployment (3F)

Percentage of points with good pilot

coverage is only 6.01%.

WCDMA signal distribution after redeployment(3F)

Percentage of points with good pilot coverage is 98.37%.





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After the WCDMA deployment–GSM system keeps working normally.–GSM system keeps its wide coverage.–Voice services are good.

Test pointLevel（ dBm）

before WCDMA deploymentLevel（ dBm）

after WCDMA deploymentQuality Voice quality Call dropping

Fire staircase on 4F -77 -81 0 Legible None

Lift entrance on 4F -40 -42 0 Legible None

Meeting room on 4F -52 -51 0 Legible None

Manager room on 4F -49 -53 0 Legible None

Right fire staircase on 3F -65 -72 0 Legible None


Hall on 3F -53 -53 0 Legible None




Meeting room on entresol -62 -62 0 Legible None


Comparison between GSM coverage performances before and after WCDMA deployment




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CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion

existing DAS: Signal source: GSM Micro

BTS

Covers the underground

park, 1F, half of 3F, and 4F

through 7F

Applies one antenna for

each lift

Application of WCDMA ,GSM and WLAN DAS



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Functional diagram of existing GSM DAS in Huihuang mansion

CMCC DAS application of WCDMA,GSM and WLAN in Dongguan Huihuang mansion(Oct.2003)




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Functional diagram of DAS shared by GSM, WCDMA and WLAN in Huihuang mansion





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Using dual band diplexer to combine GSM and WCDMA signals

Using GSM-WCDMA/WLAN diplexer to combine WLAN signal with GSM and WCDMA signals

Components replaced: splitter, antenna

Components added: diplexer, splitter, coupler




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Component Old type number New type numberNumber of components replaced in GSM/WCDMA DAS

Number of components replaced in GSM/WCDMA/WLAN DAS

Ceiling antenna IXD-360/V03-NW-A IXD-360/V03-NN 0 44

Ceiling antenna IXD-120/V06-NB IXD-360/V03-NN 1 1

Wall-mounted antenna

IWH-085/V09-NG ODP-090/V11-NW 8 8

Wall-mounted antenna

IWH-090/V08-ND ODP-090/V11-NW 5 5

2-way splitter RD-52N/NP-F1 RD-52N/NP-F2 0 19



Coupler RC-5NK/NK/NK-06F1 RC-5NK -06F 0 5

Coupler RC-5NK/NK/NK-10F1 RC-5NK -10F 0 1

List of replaced components





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Lower costs for changing GSM DAS to GSM/WCDMA DAS 14 components replaced, 15% of the total components

16% of the total costs

Higher costs for changing GSM DAS to GSM/WCDMA/WLAN DAS 96 components replaced

68% of the total costs

Installation costs are 10-20% of the total component costs.





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the WCDMA signal distribution before redeployment



The WCDMA signal distribution after redeployment



98

the uplink BLER distribution of CS12.2K the downlink BLER distribution of CS12.2K

As is shown, above 99% areas satisfy the service quality demand





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Handover test result in the hall of WCDMA system

Service type Handover type Total Handover times Successful handover times Failing handover times Successful handover ratio

CS12. 2 k Soft handover 587 587 0 100%

Inter-frequency handover

108 108 0 100%

CS64K VP Soft handover 643 643 0 100%

PS64K Soft handover 304 304 0 100%

Inter-frequency handover

129 125 4 96.90%

PS144K Intra-frequency hard handover

135 127 8 94.07%





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Out-lift/in-lift handover test result of WCDMA system

Service type Handover

type

Number of

handover

events

Number of

successful

handover

events

Number of

failed

handover

events

Handover

success

ratio

CS12. 2 k Softer

handover

423 419 4 99.05%

CS64K VP Softer

handover

280 275 5 98.21%

PS64K Softer

handover

226 226 0 100%

As is shown, the success ratio of out-lift/in-lift softer handover is above 98%





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C16 WCDMA RNP Indoor Distribution System Design ISSUE1.0

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